Syntheses, structures and properties of kinetically stabilized distibenes and dibismuthenes, novel doubly bonded systems between heavier group 15 elements

Takahiro Sasamori, Yoshimitsu Arai, Nobuhiro Takeda, Renji Okazaki, Yukio Furukawa, Masahiro Kimura, Shigeru Nagase, Norihiro Tokitoh

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    80 Citations (Scopus)


    The first stable distibene (RSb=SbR) and dibismuthene (RBi=BiR) were successfully synthesized by taking advantage of steric protection using an efficient steric protection group, 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl (Tbt). Since it is quite difficult to investigate the reactivities of the distibene (TbtSb=SbTbt) and dibismuthene (TbtBi= BiTbt) in solution due to their extremely low solubility values, similarly overcrowded distibene and dibismuthene, BbtE=EBbt (E = Sb, Bi), with sufficiently high solubility were also synthesized using another bulky substituent, 2,6-bis[bis(trimethylsilyl)methyl]-4-[tris(trimethylsilyl)methyl]phenyl group (Bbt). The crystallographic analysis and spectroscopic studies of these stable dipnictenes led to the systematic comparison of structural parameters and physical properties for all homonuclear doubly bonded systems between heavier group 15 elements. In addition to these experimentally obtained results, theoretical calculations for these doubly bonded systems also revealed the intrinsic character of dipnictenes.

    Original languageEnglish
    Pages (from-to)661-675
    Number of pages15
    JournalBulletin of the Chemical Society of Japan
    Issue number4
    Publication statusPublished - 2002


    ASJC Scopus subject areas

    • Chemistry(all)

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